Lock controlled switch



July 24, 1956 A. J. THlBERv'iLLE LOCK CONTROLLED SWITCH 2 Sheets-Sheet 1Filed Nov. 30, 1953 5L Fig. 6

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United States Patent LOCK CONTROLLED SWITCH Arthur J. Thiberville, NewOrleans, La. Application November 30, 1953, Serial No. 395,011 1 Claim.(Cl. 200-61.67)'

This invention relates in general to improvements in switch mechanisms,and more specifically to an improved lock controlled switch.

The primary object of this invention is to provide an improved switchconstruction which is mounted in combination with a lock so as to beactuated in response to actuation of such lock, whereby the manipulationof the lock may result in the automatic controlling of an electricalcircuit.

Another object of this invention is to provide an improved lockcontrolled switch which is of such a nature whereby the same may beconveniently mounted on a door with the switch being in a concealedrelation beneath the lock structure so that the switch is hidden fromon-lookers and at the same time, protected by the latch construction.

A further object of this invention is to provide an improved lockcontrolled switch which is of such a nature whereby a conventionalswitch may be combined with a conventional lock through a minimum ofalteration of such lock so as to produce a highly novel, effective anddesirable lock controlled switch.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming an part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure 1 is a fragmentary horizontal sectional view taken through a doorprovided with the lock controlled switch which is the subject of thisinvention and shows the general relationship of the lock controlledswitch with respect to the door when the door is in its locked position;

Figure 2 is an enlarged horizontal sectional view taken through theswitch of Figure 1 and shows the general construction thereof;

Figure 3 is a fragmentary horizontal sectional view similar to Figure land shows the lock with the latch mechanism thereof in its ineffectiveposition;

Figure 4 is a rear elevational view of the lock as viewed with the backplate thereof removed and shows the manner in which the bolt thereof hasbeen modified for the reception of the switch;

Figure 5 is an enlarged perspective view of the bolt and the control armtherefor, the beveled rear surface of the bolt and the associated pinthereof being clearly shown; and

Figure 6 is a transverse vertical sectional view taken substantiallyupon the plane indicated by the section line 66 of Figure 5 and furthershows the configuration of the recess in the bolt for the reception ofthe switch.

Referring now to the drawings in detail, it will be seen that there isillustrated in Figure 1 a door panel 10. It will be noted that the doorpanel 10 is of the type generally utilized for locking doors of shopsand the like and is extremely thick as compared to conventional doors.The door panel 10 has a free edge thereof seated in a rectangular rabbet12 of a door jamb construction 14. Carried by the door panel 10 and thedoor jamb construction 14 is a conventional lock which is referred to ingeneral by the reference numeral 16.

The lock 16 includes an elongated housing 18 which is secured to theinner surface of the door panel 10 by suitable screws 26. Mounted withinthe housing 18 for sliding movement to one side thereof is an elongatedbolt 22, the bolt 22 passing through an opening 24 in one side wall ofthe housing 18. The bolt 22 is selectively received in a keeper 26through an opening 28 therein, the opening 28 being opposed to theopening 24. The keeper is retained in place by suitable screws 30.

The lock 16 further includes an inner locking cylinder 32 which issecured within the confines of the housing 18 through the use of amounting plate 34 which is suitably secured to the inner surface of thehousing 18. The locking cylinder 32 has connected thereto an actuatingshaft 36 which extends through a rear cover plate 38 of the housing. Therear cover plate 38 is removably secured to the housing 18 and concealsthe latch mechanism mounted therein. The actuating shaft 36 extendsthrough a relatively large bore 40 which passes transversely through thedoor panel 10. Mounted in the bore 40 at the front side of the doorpanel 10 is a forward locking cylinder 42. The forward looking cylinder42 is retained in place by a pair of elongated fasteners 44 which arecarried by a mounting plate 46 which is disposed within the rear portionof the bore 40. Through the use of the actuating shaft 36, it will beseen that either of the locking cylinders 32 and 42 may be used forselectively controlling positioning of the bolt 22.

Carried by the actuating shaft 36 for movement there by is a lever 48which is, in turn, connected to an arm 50. The arm 50 is pivotallyconnected to the bolt 22 by a pin 52 rigidly carried by the bolt 22.Also carried by the pin 52 is a spring 54 which has a first arm 56thereof connected to the am 50. A second arm 58 of the spring 54 engagesa vertical wall of a recess 60 in the bolt 22. The recess 69 receives anend portion of the arm 50 and the spring 54 is utilized to retain thearm 50 and the bolt 22 in preselected positions.

It will be understood that the above described structure of the lock 16is that of a conventional lock now readily obtainable on the market. Thelock 16 is specifically designed for use with relatively thick doorpanels, such as the door panel 10 and has heretobefore had as itsprimary and sole purpose to retain door panels, such as the door panel16, in latched positions, as desired.

Referring now to Figure 2 in particular, it will be seen that there isillustrated a push-button type switch which is referred to in general bythe reference numeral 62. The push-button type switch 62 includes acylindrical housing 64 which terminates at its open end in an outwardlydirected annular flange 66. The annular flange 66 is provided withcircumferentially spaced openings 68 which are intended for thereception of securing fasteners.

The housing 64 includes a bottom wall 70 which has secured to the outersurface thereof in insulated relation thereto a pair of terminals 72.The terminals 72 have, in turn, connected thereto a pair of opposedcontacts 74.

Mounted within the housing 64 and projecting out of the open end thereofis a button 76. The button 76 is guidingly received within the housing64 and has secured thereto a shaft 78. The shaft 78 passes through theclosed end 70 of the housing 64 and is supported in insulated relationwith respect thereto. Removal of the shaft 78 is prevented by a lockingclip 80. The button 76 is urged to an outermost position by a spring 82mounted within the housing 64.

Carried by the shaft 78 is an insulated sleeve 84. The insulated sleeve84 is provided with an annular contact ring 86 which is selectivelyengageable with the contacts 74 to complete the circuit between theterminals 72. It will be understood that the structure of thepush-button type switch 62 is conventional and not in itself a part ofthis invention. It will also be understood that the position of thecontact ring 86 maybe varied so as to permit the closing of the circuitbetween the terminals 72 either when the button 76 is depressed or whenit is in the position shown in Figure 2.

The push-button type switch 62 is mounted on the housing 18 by fasteners88, the fasteners 83 being rigidly secured to the back plate 38. Theswitch 62 is disposed in an opening 90 in the rear face of the doorpanel 10, the opening 90 underlying the housing 18 and the switch 62being concealed and protected thereby. Connected to the terminals 72 arewires 92 which pass through an elongated bore 94 in the door panel 10.It will be understood that the bore 94 extends longitudinally of thewidth of the door panel 10 and exit therefrom adjacent the hinged edge(not shown) thereof. The electric wires 92 will then pass through theopposite side of the jamb structure 14 and be connected to an electricalcircuit in any desired manner.

As is best illustrated in Figure 3, when the bolt 22 is in itsineffective position, the rear surface thereof is in engagement with thebutton 76 and retains it in its depressed position. In Figure 1, it willbe seen that the bolt 22 is in its effective position, and the button'76 is in extended position. Thus, it will be seen that when the bolt 22moves between its ineffective and effective positions, the plunger 76 isoperated to cause actuation of the switch 62.

It will be noted that the recess 60 in the bolt 22 is of a size toreceive the push-button 76. However, in order to facilitate the inwardmovement of the bolt 22, it has been necessary to bevel both the rearend of the pin 52 and the outer portion of the recess 60 as at 96 and98, respectively, as viewed in Figures 5 and 6. Thus, when the bolt 22moves from its effective position to the ineffective position, therounded portion of the button 76 will ride up over the rear end of thepin 52 and the beveled end portion 98 of the recess 60 to engage therear surface of the bolt 22, as is illustrated in Figure 3.

It will be understood that the wires 92 may be connected in any desiredelectrical circuit which may be actuated by the switch 62. For example,when the switch 62 is of the construction illustrated in Figure 2, theswitch 62 may be utilized to control a burglar alarm system. It willthus be seen that when the bolt 22 is in its effective position, theswitch 62 will be in its closed position, and the burglar alarm systemwill be energized. When the shop owner opens the shop through themovement of the bolt 22 to its ineffective position, the switch 62 isautomatically opened with the result that the burglar alarm system isautomatically cut off. On the other 5 hand, the switch 62 may be of thetype Where the annular contact ring 86 is disposed remotely from theterminals 72 with the result that it is necessary to depress thebutton'76 in order to close the switch. With the switch 62 soconstructed, the switch could be utilized in controlling an airconditioning system, lights, etc. Thus, it will be seen that when thebolt 22 is moved to its ineffective position, the switch 62 would beclosed to cause the operation of the air conditioning system. Then, whenthe shop is closed, the bolt 22 will be moved to its effective positionand the switch 62 opened and the air conditioning system turned ofi. Itwill be understood that many other uses may be found for the lockcontrolled switch which is the subject of this invention.

Although the door panel 1 0 has been illustrated and described as beingextremely thick, it is to be understood that the lock 16 may be utilizedwith conventional thickness door panels. Also, it is not necessary thatthe wires from the switch 62 pass through bores in the door panel 10. Ifdesired, the wires may be passed through and concealed in moldingsecured to the surface of the door panel to which the lock 16 isattached.

From the foregoing, the construction and operation of the device will bereadily understood and further explanation is believed to beunnecessary. However, since numerous modificationsand changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction shown and described, andaccordingly, all suitable modifications and equivalents may be resortedto, falling within the scope of the appended claim.

What is claimed as new is as follows:

For use in combination with a relatively thick panel, a lock controlledswitch, said lock controlled switch comprising a lock mechanismincluding a housing securable to a panel with a rear face in engagementwith a panel, a bolt slidably carried by said housing, a switch carriedby said rear face and projecting rearwardly therefrom for positioning inan opening in a panel, means connecting said switch to said bolt foractuation thereby, said switch being of the push-button type said meansincluding a button of said switch, said bolt having a recess in a rearsurface thereof, an arm receivable in said recess for holding said boltin a selected position, a pin carried by said arm having spring meansengaged thereabout for holding said arm in engagement with said bolt,said pin and said bolt having bevelled surfaces forming cams forengagement with said button.

References Cited in the file of this patent UNITED STATES PATENTS1,323,729 Tracz Dec. 2, 1919 1,674,570 A. Re June 19, 1928 FOREIGNPATENTS 2,094 Great Britain Mar. 19, 1903 of 1903 38,648 SwitzerlandDec. 21, 1906 629,952 France Nov. 21, 1927

